1211330242387 has 2 divisors, whose sum is σ = 1211330242388. Its totient is φ = 1211330242386.

The previous prime is 1211330242361. The next prime is 1211330242459. The reversal of 1211330242387 is 7832420331121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211330242387 is a prime.

It is a super-2 number, since 2×1211330242387² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1211370242387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605665121193 + 605665121194.

It is an arithmetic number, because the mean of its divisors is an integer number (605665121194).

Almost surely, 2^{1211330242387} is an apocalyptic number.

1211330242387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211330242387 is an equidigital number, since it uses as much as digits as its factorization.

1211330242387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 1211330242387 in words is "one trillion, two hundred eleven billion, three hundred thirty million, two hundred forty-two thousand, three hundred eighty-seven".